Originally Posted by
d16dcoe45
I had heard the Tamiya Team runs the plastic gears--even with the 4.5 turn motors but I would imagine they replace them quite often! I would believe that the gears flare out just as you described after only a little while in mod.
I myself was running the steel gears in 17.5 and IMO they are completely unnecessary for a spec class. They add quite a bit of rotating weight and I have since gone back to plastic--I even use the plastic one-piece cross with no issues, I just make sure to sand the back of the plastic gears so the total thickness matches the steel gears and shim with a single 0.2mm shim above each o-ring.
I'm not sure all of the team do, but earlier this year talking to Marc he was, but replacing them regularly. Myself and another mod team mate tried using the carbon gears again because of Marc's suggestion but after only one set of gears failing again I went back to the steel... Much more reliable for my racing, but yes heavier too...